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JulieMardersdw214-4743 avatar image
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JulieMardersdw214-4743 asked JimmyYang-MSFT answered

Hybrid Sign in error

We're getting the following error when trying to sign in with our O365 admin account into the SfB Control Panel:

Get-CSWebTicket : The underlying connection was closed: An unexpected error occurred on a send.

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1 Answer

JimmyYang-MSFT avatar image
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JimmyYang-MSFT answered

Hi @JulieMardersdw214-4743

It seems related to the TLS connection. In this way, we recommend you try to run the following command in PowerShell to enforce TLS 1.2.

[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12



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